几何测距法,一般分为直接测距法和间接测距法两种。直接测距法是借助带有刻度的线状尺,由测线的这一端直接量到测线的另一端。间接测距克服了直接量距时受地形障碍的影响。我们在生产实践中在同地区,布置了一条环形导线网开展了几种测距方法的对比试验,见附图。 Geometry ranging method, generally divided into two kinds of direct ranging method and indirect ranging method. Direct ranging method is by means of a graduated linear ruler, measuring line directly from the end of the measuring line to the other end. Indirect Ranging overcomes the impact of topographic obstacles caused by direct distance measurement. We in the production practice in the same area, the layout of a circular wire network carried out several methods of measuring the contrast test, see the accompanying drawings.